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Authors
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Schüller, T. ; Lauke, B.
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Title
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Finite-element simulation of interfacial crack propagation: Methods and tools for the complete failure process under large scale yielding
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Date
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06.10.2006
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Number
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13457
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Abstract
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Interface crack propagation is described with an advanced finite element model on the basis of a non-linear material law with large plastic deformation and a global energy release rate criterion. The simulation covers the whole failure process in one model, starting from small loads, development of a large plastic zone, onset of cracking and crack propagation until complete rupture.<br />The model implements an elasticplastic material law including hardening. Numerical stability and reliability strongly depend on the correct implementation of the material law. The central part is the realization of a moving crack. Due to the discrete nature of a finite element model, the crack can only propagate in finite steps resulting in sudden changes of boundary conditions. Smoothing these changes is essential for numerical stability and reasonable computation time.<br />Simulated crack propagation bases on a criterion to decide between further increase of load or further advance of crack. A global energy release criterion is used here and was found to be independent of the specific discretisation.
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Publisher
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Engineering Fracture Mechanics
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Wikidata
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Citation
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Engineering Fracture Mechanics 73 (2006) 2252-2263
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DOI
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https://doi.org/10.1016/j.engfracmech.2006.05.016
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Tags
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